44:90:07:06Generally safe concentration methods.

The following methods of preparing concentrated cannabis are permissible if listed in the establishment’s operating procedures on file with the department: (1) Mechanical concentration using: (a) Potable water and ice made from potable water; (b) Dry screening or sieving; (c) Cryogenic or subzero processing not involving a solvent; and (d) Pressure and temperature. (2) Infusion of cannabis in food grade fats or synthetic food additives using: (a) Propylene glycol; (b) Glycerin; or (c) Butter, olive oil, or other typical cooking fats.

Source: 48 SDR 40, effective October 5, 2021.